3 years ago

What element forms an ion with an electronic configuration of [kr] and a –2 charge?

2 answers:

8 0

Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.

nekit [7.7K]3 years ago

6 0

Must be Selenium (Se). It is two space away from Kr, which means that it needs two extra electron to be like a noble gas, Kr.

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